Aranet Aranet4 Home vs AirGradient ONE: Which Should You Buy?
A spec-by-spec comparison of the Aranet Aranet4 Home ($200) and the AirGradient ONE ($150) — accuracy, sensors, connectivity, and which one fits your situation.
Quick Verdict
The AirGradient ONE is $50 cheaper; the AirGradient ONE tracks more parameters (6 vs 4); only the AirGradient ONE offers WiFi for remote monitoring; the Aranet Aranet4 Home is the portable option.
Choose the Aranet Aranet4 Home if you will carry it between rooms or when travelling.
Choose the AirGradient ONE if you want to spend less, or you want the fuller picture (CO2, PM2.5, Temperature, Humidity, VOC, NOx), or you need remote access and history in an app.
Specs Side by Side
| Feature | Aranet Aranet4 Home | AirGradient ONE |
|---|---|---|
| Price | $200 | $150 |
| Sensors | CO2, Temperature, Humidity, Atmospheric Pressure | CO2, PM2.5, Temperature, Humidity, VOC, NOx |
| Sensor Type | NDIR | NDIR |
| CO2 Accuracy | ±50 ppm | ±50 ppm |
| CO2 Range | 0-9999 ppm | 400-5000 ppm |
| Connectivity | Bluetooth | WiFi |
| Display | Yes | Yes |
| Portable | Yes | No |
| Battery Life | 2+ years | USB-C powered |
Green highlights the stronger spec where there is a clear winner.
Frequently Asked Questions
Which is better, the Aranet Aranet4 Home or the AirGradient ONE?+
The AirGradient ONE is $50 cheaper; the AirGradient ONE tracks more parameters (6 vs 4); only the AirGradient ONE offers WiFi for remote monitoring; the Aranet Aranet4 Home is the portable option. Choose the Aranet Aranet4 Home if you will carry it between rooms or when travelling. Choose the AirGradient ONE if you want to spend less, or you want the fuller picture (CO2, PM2.5, Temperature, Humidity, VOC, NOx), or you need remote access and history in an app.
Is the Aranet Aranet4 Home or AirGradient ONE cheaper?+
The AirGradient ONE is the more affordable option at $150, versus $200 for the Aranet Aranet4 Home.
Do both use real CO2 sensors?+
The Aranet Aranet4 Home uses a NDIR sensor; the AirGradient ONE uses a NDIR sensor. NDIR and photoacoustic sensors measure CO2 directly, unlike eCO2 estimators.
Which measures more air quality parameters?+
The AirGradient ONE tracks more, with 6 parameters (CO2, PM2.5, Temperature, Humidity, VOC, NOx), compared with 4 for the Aranet Aranet4 Home.
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